Little America, Wyoming has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 28.5 °F (low) to 57.5 °F (high). Annual precipitation averages 8.8 Inches. Little America is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 8.5 °F | 33.1 °F | 0.46 in. |
| February | 10.9 °F | 35.9 °F | 0.43 in. |
| March | 20.7 °F | 46.2 °F | 0.63 in. |
| April | 27.4 °F | 55.1 °F | 0.94 in. |
| May | 35.7 °F | 65.0 °F | 1.45 in. |
| June | 43.3 °F | 76.5 °F | 0.95 in. |
| July | 50.1 °F | 85.2 °F | 0.53 in. |
| August | 48.5 °F | 83.3 °F | 0.66 in. |
| September | 39.5 °F | 73.7 °F | 0.95 in. |
| October | 29.3 °F | 59.3 °F | 0.87 in. |
| November | 19.0 °F | 44.1 °F | 0.51 in. |
| December | 9.1 °F | 33.0 °F | 0.4 in. |
| Annual | 28.5 °F | 57.5 °F | 8.78 in. |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |